Genus: Protoichthyosaurus APPLEBY, 1979
Etymology: Greek, protos, “first”, and Ichthyosaurus: First Ichthyosaurus.
Species: fortimanus (OWEN, 1884) LOMAX & MASSARE, 2018
= Ichthyosaurus fortimanus OWEN, 1884
Etymology:
Holotype: NHMUK R1063
Locality: Lyme Regis, Dorset County, England, Southern United Kingdom.
Horizon:
Biostratigraphy:
Age: Hettangian-Sinemurian Stage, Lias Epoch, Early Jurassic.
Material: Paddle.
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Species: prostaxalis APPLEBY, 1979
Etymology:
= Ichthyosaurus prostaxalis (APPLEBY, 1979) MAISCH & HUNGERBUHLER, 1997
Holotype: BRLSI M3553 (old B. 1963'5/O.S.)
Locality: Street, Somerset County, England, Southern United Kingdom.
Horizon: 'Pre-Planorbis Beds,', Blue Lias Formation.
Biostratigraphy: Tilmanni Zone.
Age: Lower Hettangian Stage, Lower Lias Epoch, Early Jurassic.
Material: A partial skull, pectoral girdle and both forefins.
Paratypes:
BRLSI M3555 (formerly B. 1963'7/O.S): Fragmentary skull and skeleton.
BRLSI M3565 (formerly B. 1963'15/O.S): Fragmentary skull and skeleton.
A partial forefin (note now missing? M. Evans pers com to Lomax, et al., 2017).
OUM J. 13,799: Fragmentary skull and skeleton. Note: Skeleton may be composite (MASSARE & LOMAX, 2016).
Locality: Barrow-on-Soar, Leicestershire County, England, Southern United Kingdom.
Horizon: Blue Lias Formation.
Biostratigraphy: C. johnstoni sub-biozone, P. planorbis biozone.
Age: Lower Hettangian Stage, Lower Lias Epoch, Early Jurassic.
Material:
LEICT G454.1951/164 (formerly LM 454'1951/164): Fragmentary skull and skeleton.
NHMUK OR29672: A partial forfin with soft part preservation.
Referred material:
WEEDEN & CHAPMAN, 2022
LEICT G142.1991: Three-eimensional skull lacking rostrum anterior teo the external naris plus partial pectoral girdle and proximal humerus.
LOMAX, MASSARE & MISTRY, 2017
Locality: Unknown, England.
Horizon: Unknown.
Biostratigraphy:
Age: Early Jurassic.
Material:
UORCMZ FE19-2: A partial skeleton of a very small individual.
BRLSI M3562: Right forefin.
BRLSI M0653: Left forefin.
BU 5323 (formelry GIRUG 27683): Skull.
Locality: Lyme Regis? Dorset County, England, Southern United Kingdom.
Horizon:
Biostratigraphy:
Age: Lower Lias Epoch, Early Jurassic.
Material:
OUMNH J.26971: An isoalted proximal forefin.
Locality: Street, Somerset County, England, Southern United Kingdom.
Horizon: 'Pre-Planorbis Beds,', Blue Lias Formation.
Biostratigraphy: Tilmanni Zone.
Age: Lower Hettangian Stage, Lower Lias Epoch, Early Jurassic.
Material:
SOMAG/GEO (old AGC) 12: Skull and partial skeleton.
NMING F8747: Damaged skull and partial skeleton.
NHMUK R1-63: A large forefin.
TTNCM 41/2017 (formerly TV52): A fragmentary ventral skull and forefin.
Localty: Severn Valley Area, Gloucestershire County, England, Southern United Kingdom.
Horizon:
Biostratigraphy:
Age: Lias Epoch, Early Jurassic.
Material:
GLAHM V1180 part and counterpart: Partial skull in a nodule.
Locality: Barnstone, Nottinghamshire County, England, Southern United Kingdom.
Horizon: Hydraulic Limestone.
Biostratigraphy: Tilmanni Zone.
Age: Lower Hettangian Stage, Lower Lias Epoch, Early Jurassic.
Material:
NOTNH: FS13770: A partial skull.
UOD D1: A partial skull.
Locality: Binton, Warwickshire County, England, Southern United Kingdom.
Horizon: Wilmcote Limestone Member, Blue Lias Formation.
Biostratigraphy:
Age: Lower Hettangian Stage, Lower Lias Epoch, Early Jurassic.
Mateiral:
WARMS G347: A complete skull.
Locality: Barrow-upon-Soar, Leicestershire County, England, Southern United Kingdom.
Horizon: 'Pre-Planorbis Beds,', Blue Lias Formation.
Biostratigraphy: Tilmanni Zone.
Age: Lower Hettangian Stage, Lower Lias Epoch, Early Jurassic.
Material:
NHMUK R36958: A skull.
LEICHT G729.1889.1: A partial skull that might be associated with caudla centra.
LEICT G738.1889: Poorly preserved three-dimensional skull.
NMING F8756: Partial three-dimensional skull.
NMING F16625: Partial three-dimensional skull.
Locality: Lavernock Point, Penarth, Glamorganshire County, England, Southern United Kingdom.
Horizon: Blue Lias Formation.
Biostratigraphy:
Age: Lower Hettangian Stage, Lower Lias Epoch, Early Jurassic.
Material:
NMW 2012.23G.1: A nearly complete skull.
LOMAX, PORRO, & LARKIN, 2019
Localitiy: Fell Mill Farm, between Shipston-on-Stour and Honingon, Warwickshire, England, Southenr United Kingdom.
Horizon: Liassic Clay.
Biostratigraphy: Semicostatum Ammonite Zone.
Age: Lower Sinemurian Stage, Lower Lias Epoch, Early Jurassic.
Material:
BMT 1955.G35.1: An almost complete, three-dimensional skull and parital postcranial skeleton.
WEEDEN & CHAPMAN, 2022
Locality: Lyme Regis, Dorset County, England, Southern United Kingdom.
Horizon: Blue Lias Formation.
Biostratigraphy: A. bucklandi biozone.
Age: Sinemurian Stage, Lower Lias Epoch, Early Jurassic.
Material:
GPIT RE/09728: Three-dimensional skull.
= Protoichthyosaurus prosostealis APPLEBY, 1979
Etymology:
= Ichthyosaurus prosostealis (APPLEBY, 1979) MAISCH & HUNGERBUHLER, 1997Holotype: B. 1963'24/O.S
Locality: Street, Somerset County, England, Southern United Kingdom.
Horizon:
Biostratigraphy:
Age: Lower Lias Epoch, Early Jurassic.
Material: Fragmentary skull and skeleton.
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Species: applebyi LOMAX, MASSARE & MISTRY, 2017
Etymology: In honor of paleontologist Robert M. Appleby, for his contributions to the study of ichthyosaurs. He first recognized the unique forefin structure of Protoichthyosaurus adn erected the genus.
Holotype: UNM.G.2017.1 (previously, UON FR159, UON TC3199)
Locality: Possibly from Nottinghamshire or Leicestershire,
Horizon: Unknown.
Biostratigraphy:
Age: Early Jurassic.
Material: Skull and articulated skeleton.
Referred material:
LOMAX & MASSARE, 2018
Locality: Lyme Regis, Dorset County, England, Southern United Kingdom.
Horizon:
Biostratigraphy:
Age: Hettangian-Sinemurian Stage, Lias Epoch, Early Jurassic.
Material:
NHMUK R1164: Nearly complete, isolated skull with a few articualted cervical vertebrae.